Form for concrete vessels.



0. P. KROEGER. FORM FOR CONCRETE VESSELS.

14m APPLICATION FILED MAR. 30, lv9l8- Patented NOV 5,

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O. P. KBUEGER. FORM FORICONCRH'E VESSELS. APPLICATION FILED MAR. so. 1912.

Patented Nov, 5,191.8.

2 5HEETS-SHEET 2- a. WASNlNG prtrrn s ra rns OTTO 1P. KROEGER, 0]? EL FAfiO, TEXAS.

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To all whom it may concern:

Be it known that T, O'rTo P. Knonona, a citizen of the United States, and a resident of El Paso, in the county of El Paso and State of-Texas, have invented certain new and useful Improvements in Forms for Concrete Vessels, of which the following is a specification.

My invention relates to improvements in concrete forms and more particularly in forms for concrete vessels, and it consists in the constructions, combinations and arrange ments herein described and claimed.

An object of my invention is to provide a form for concrete vessels, including as one of the important features, a portable outer shell made in sections and adapted to be used again and again in building different vessels.

Other objects and advantages will appear in the following specification, reference being had to the accompanying drawings, in which:

Figure 1 is a perspective view showing a section of the concrete form, the inner shell being partly completed,

Fig. 2 is a cross section of one-half of the vessel, showing the outer and inner shells of the concrete form in place and showing the side of the vessel completed,

Fig. 3 is a detail view showing how the bottom sill of the outer shell rides on the rail timber,

Fig. 4 is a similar view showing the bottom sill elevated,

Fig. 5 is a cross section on the line 5-5 of Fig. 3, and

Fig. 6 is a cross section on the line 66 of Fig. 1.

The most important feature of the inven tion resides in the construction and arrange ment of an outer shell 1 which remains intact and. is adapted to be moved into place in building the form of a concrete vessel, and adapted to be again moved out of place in taking the form apart. The inner shell 2 is gradually built up as the work of pouring the concrete which finally forms the vessel V proceeds. Fig. 1 illustrates the vessel under construction and also shows how the inner shell 2 is gradually built up as just explained.

Referring first to the outer and permanent shell 1, it will be observed that a plurality of standards 3 are fixed upon a sill 1 which has a plurality of rollers or dollies 5 by means of which the outer shell is rolled Specification of Letters Patent.

Patented Nov, 55, 1T6.

Application filed March 30, 1918. Serial No. 225,710.

into position. i The dollies 5 have trunnions 6 at the end, and these are journaled in brackets 7 which are secured to the sill i.

A maiiubrace 8 reaches from a point near so the top of the standard 3 to a point near the extremity of the sill l. In this connection, it will be noted that in the present instance, the standard 3 is made double, that is to say, timbers are nailed or otherwise secured on the opposite sides of the sill 4 and the main brace 6 is secured in place in any suitable manner, the upper end of the brace extending between the timbers of the standards 3. A. strut 9 extends inwardly at an angle and is secured to the sill 1 by a metal brace 10. The lower end of the strut 9 is disposed adjacently to the rounded portion of the hull of the vessel V and serves the important function of providing a support for a plurality of horizontal form supports 11.

Braces 12 are provided between the main brace 8 and the standard 3 and the horizontal members of a super-structure 13 are seso cured on top of the standard 3 and eXtend over the vessel as shown in the drawing. The super-structure 13 forms the support to which the inner shell 2 is hung and this support includes a plurality of brace legs 14 which are pendent from the superstructure. One or more lintels 15 are carried by the brace legs 14: and these lintels form the supports for the girders on which the decks of the vessel are built. In the drawing, these girders and the decks of the vessel are omitted, however, the illustration being confined solely to the more important features of the invention.

Battens 16 and 1? support form boards 18 and 19 of the outer and inner shells re spectively. The vertical and horizontal por tions of the battens 16 are secured to form supports 20. These are similar to the form supports 11 and also extend longitudinally of the outer shell as clearly shown in Fig. l. The battens 16 may be made in any desired manner and in actual practice are sawed out to the proper shape. The battens 16 occur at about every two feet of the length of the The form spectively. The outer shell is made in sections and the sections when once built may be used again and again in forming difierent' vessels.

The form boards 19 of the inner shell 2 are built up from the bottom as is well shown in Fig. 1. The inner shell has form supports 21 which extend throughout the length of the Vessel, similarly as do the outer form supports 2-0. In operation, the shell of the concrete form is rolled into position. For this purpose a plurality of rail timbers 22 resting on sleepers or mud sills 23 are provided. First of all it should be understood that the outer shell is made in sections or panels. Each of these panels consists of two or more of the sections represented between the standards 3 and the division line of one of these anels is illustrated in Fig. 1.

N ow W ien the panels of the outer shell are rolled into position, at which time the dollies 5 ride upon the rail timbers 22, all of the panels of the outer shell are elevated so that the dollies 5 are raised from the rail timbers, by wedges 24 which are driven in place substantially as illustrated. The keel K is then laid or poured in the keel box 25 and the bottom or floor of the vessel is formed very much on the same order that the ordinary pavement is formed. The inner shell 2 is built up from the bottom at the correct space from the form boards of the outer shell, and as the inner shell is built up, suitable supports are provided and these are attached to the pendent members of the super-structure 13. The remainder of the operation will be readily understood, it consisting of simply adding form boards on the inner'shell until the top of the side of the vessel is reached, the concrete being poured in the meantime, care being taken to pack the concrete into a solid mass so that no holes may remain. When the hull of the vessel is finally hardened, the inner shell is torn down, but the outer shell upon being again lowered on the dollies 5, is rolled away and is used in constructing another ship.

While the construction and arrangement of the concrete form asv illustrated in the accompanyin drawings is that of a gener-. ally pr'eferre form, obviously modifications and changes may be made without departin from the spirit of the invention or the scope of the claims.

I claim 1. In a form for concrete vessels, means including rail timbers providing a foundation, an outer permanently formed shell including a sill and braced standard, means carried by the sill enabling the shell to be rolled upon the foundation, a superstructure carried by the standard, and a destructible inner shell pendent from said superstructure and spaced from the outer shell to provide a form. v

2. In a form for concrete vessels, means including rail timbers providing a foundation, an outer shell including sills and vertical standards, rollers carried by the sills adapted to run on the rail timbers, means for elevating the sills and lifting the rollers out of contact with the rail timbers when the outer shell is moved into final position, form boards constituting the outer shell, means including form supports for supporting said shell on the sills and vertical standards, a super-structure carried by the vertical standards, brace legs pendent from the superstructure, and an inner destructible shell built upon the brace legs and adapted to be removed in separating the form, the outer shell being adapted to be rolled out of position.

3. In a form for concrete vessels, an outer shell consisting of form boards, battens supportin the form boards, horizontal sills, vertica standards mounted on the sills, form supports disposed between the battens, sills and standards, a super-structure carried by the standards, brace legs pendent from the super-structure, an inner destructible shell built upon the brace legs and spaced from the formboards of the outer shell to provide a mold, a main brace between the vertical standard and the horizontal sill, a diagonal strut extending from the main brace to the sill beyond said standard and providing a support for the adjacent form supports at the rounded portion of the vessel, rollers journaled beneath the sill and adapted to roll upon a rail timber in moving the outer shell into position, and means includ-,

ing wedges for raising the rollers out of contact with the rail timber.

OTTO P. KROEGER.

qopies of this patent, may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. O. 

